. >>> jack kennedy lowered tax rates increased growth. >> oh, now you're jack kennedy. >> joe biden and paul ryan locking horns in the only vice- presidential debate of 2012. violent's revival of lloyd bentsen's 1988 -- vice president's revival of lloyd bentsen's 1988 barb. >> here's randall pinkston are highlights from the clash in kentucky and results of who came out the winner. >> i will be very specific. >> reporter: vice president joe biden wasted no time challenging congressman paul ryan's take on foreign policy. >> with all due respect, that's a bunch malarkey. >> and why is that so? >> not a single thing he said is accurate. >> reporter: the vice president and ryan clashed over the economy, taxes and medicare with the democrat often on the attack. >> and they're holding hostage the middle class tax cut. it's about time they take some responsibility. >> reporter: but ryan fired back. he slammed the obama administration's economic record. >> this is not what a real recovery looks like. we need real reforms for a real recovery, and that's exactly what mitt romney and i are proposin